That's right. Although (source: built Si battery company) the more powerful commercial trend is customers with arcane needs paving the way for architectures and chemistries that later can serve more general needs. Expensive NMC did make for cheaper NMC, but of course what actually happened is that Tesla and the automaker followed the lead of Enphase in switching over to LFP.

In the more exotic architectures and chemistries, what's moving the needle is the exotic military or medical need, where the battery can be 10x more expensive on the OEM BOM and barely move the actual end unit price to the final user.